RDCO-01/02/03/04 DDCS communication option modules
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RDCO-01/02/03/04 DDCS communication option
modules
What this chapter contains
This chapter contains a description of the RDCO-0x DDCS communication option
modules connections and the technical specifications of the RDCO-0x modules.
Overview
The RDCO-0x DDCS Communication options are add-on modules for the
• RMIO Motor Control and I/O board (also part of RDCU control units)
• BCU control units.
RDCO modules are available factory-installed as well as retrofit kits.
The RDCO module includes the connectors for fiber optic DDCS channels CH0,
CH1, CH2 and CH3. The usage of these channels is determined by the application
program; see the Firmware Manual of the drive. However, the channels are normally
assigned as follows:
CH0 – overriding system (eg. fieldbus adapter)
CH1 – I/O options and supply unit
CH2 – Master/Follower link
CH3 – PC tool (ACS800 only).
There are several types of the RDCO. The difference between the types is the
optical components. In addition, each type is available with a coated circuit board,
this being indicated by a “C” suffix, eg. RDCO-03C.
The optical components at both ends of a fiber optic link must be of the same type
for the light intensity and receiver sensitivity levels to match. Plastic optical fiber
(POF) cables can be used with both 5 MBd and 10 MBd optical components. 10
MBd components also enable the use of Hard Clad Silica (HCS) cables, which allow
longer connection distances thanks to their lower attenuation.
Note: The optical component type does not reflect the actual communication speed.
Module type
Optical component type
CH0 CH1 CH2 CH3
RDCO-01(C) 10 MBd 5 MBd 10 MBd 10 MBd
RDCO-02(C) 5 MBd 5 MBd 10 MBd 10 MBd
RDCO-03(C) 5 MBd 5 MBd 5 MBd 5 MBd
RDCO-04(C) 10 MBd 10 MBd 10 MBd 10 MBd
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